Rewrite these sentences. Use the past simple and past perfect simple in your answers.

1.I lost my credit card. I did not use it.
*I..............my credit card because I...............it.

2.I broke my leg. I could not go out.
*I.............out because I.................my leg.

3.Sue had a boyfriend. Then she met Greg at the disco.
*When Sue.............Greg at the disco, she.............a boyfriend.

4.They changed the time. They did not let me know.
*Nobody .............me know that they................. the time.